/*
 * jnlp-loader
 * Copyright (C) 2009  John Pritchard, jdp@syntelos.org
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package loader;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.net.MalformedURLException;

import org.xml.sax.SAXException;

/**
 * 
 */
public final class Extension
    extends Loader
{
    static Extension[] Add(Extension[] list, Extension item){
        if (null != item){
            if (null == list)
                return new Extension[]{item};
            else {
                int len = list.length;
                Extension[] copier = new Extension[len+1];
                System.arraycopy(list,0,copier,0,len);
                copier[len] = item;
                return copier;
            }
        }
        else
            return list;
    }


    private volatile Jnlp jnlp;


    Extension(URL url){
        super(url,false);
    }


    @Override
    protected void downloaded(java.lang.ClassLoader loader) throws IOException {
        FileInputStream in = new FileInputStream(this.target());
        try {
            this.jnlp = new Jnlp(this.source,in);
            this.jnlp.init(loader);
        }
        catch (SAXException exc){
            throw new RuntimeException(this.source.toString(),exc);
        }
        finally {
            in.close();
        }
    }
}
